"One is a little more animalistic and brutal, but the other can take a lot more pain," says executive producer Jeff Davis (who is also a real-life twin). "We have these interesting scenes where we see that Charlie, who plays Ethan, can take a beating — and enjoy it!"

So why don't either of them seem happy? "There's a little secret to them that I can't tell you about," Davis says, hinting that whatever is going on in this electrifying scene represents "a new kind of transformation for these werewolves." Shocking!